Function cmp_u64 

pub fn cmp_u64(
    lhs: &[u64],
    rhs: &[u64],
    mask: Option<&Bitmask>,
    op: ComparisonOperator,
) -> Result<BooleanArray<()>, KernelError>

Type-specific SIMD-accelerated comparison function with vectorised operations.

Specialised comparison implementation optimised for the specific numeric type with architecture-appropriate lane configuration. Features memory alignment checking, SIMD vectorisation, and optional null mask support for maximum performance.

Parameters

• lhs: Left-hand side slice for comparison
• rhs: Right-hand side slice for comparison
• mask: Optional validity mask applied after comparison
• op: Comparison operator to apply

Returns

Result<BooleanArray<()>, KernelError> containing comparison results.

SIMD Optimisations

• Memory alignment: Checks 64-byte alignment for optimal SIMD operations
• Vectorised comparisons: Uses SIMD compare operations for parallel processing
• Scalar fallback: Efficient scalar path for unaligned or remainder elements